Roll changing apparatus for printing presses



Feb. 14, 1939. H 1.. MCCLEERY ROLL CHANGING APPARATUS FOR PRINTING PRESSES Filed April 25, 1932 4 Sheets-Sheet l Feb. 14, 1 939. H MCCLEERY 2,147,617

ROLL CHANGING APPARATUS FOR PRINTING PRESSES Filed April 25, 1932 4 Sheets-Sheet 2 fZy-Z Feb. 14, 1939. H MCCLEERY ROLL CHANGING APPARATUS FOR PRINTING PRESSES Filed April 25, 1952 4 Sheets$heet 5 W gfely- (m1 @MQMM? YNQ \ RMWN Feb. 14, 1939.

H. L. M CLEERY ROLL CHANGING APPARATUS FOR PRINTING PRESSES Filed April 25, 1932 4 Sheets-Sheet 4 (Z/fiiii mam/40277;???

Patented Feb. 14, 1939 PATENT OFFICE ROLL CHANGING APPARATUS FOR PRINT- ING PRESSES Harold L. McCleery, Downers Grove, 111., asslgnor to Allan J. Cline, Chicago, Ill.

Application April 25, 1932, Serial No. 607,315

18 Claims.

This invention relates to apparatus for supplying paper to printing presses and more particularly to means for making high speed paste'rs whereby the web from a nearly exhausted roll may be joined to the web of a reserve roll with the press running at normal speed.

The general'object of the invention is to provide an efllcient apparatus for this purpose which may be applied to the type of roll apparatus now in common use without undue complications or space requirements and which may be operated by workmen of ordinaryskill, the operation being almost wholly automatic and leaving very littl to the discretion of the workmen.

Among the special objects of the invention are to provide: novel automatic devices for controlling the positioning of a spare roll adjacent the traveling web from an expiring roll preliminary to making a paster; means electrically controlled from the press for bringing the spare roll to web speed; means operating with exceptional speed for effecting contact between the spare roll and the traveling web; means for timing the contact with reference to the location of adhesive on the spare roll to insure that the initial contact will be at a point on the roll well in advance of the adhesive; and an accurately timed and quickly acting cut-off device for severing the web from the expiring roll after the pastor is made.

Other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Referring to the drawings: I

Fig. 1 is an end view of a web roll support and roll changing apparatus in which my invention is embodied, the reserve roll being shown in the position which it assumes just prior to making a poster;

Fig. 2 is an elevational view taken lengthwise of the roll support from a plane at the left of Fig. 1;

4 Fig. 3 is a view of the reserve roll prepared for a roll change;

Fig. 3a is a detail view of the paper tab by which the leading end of the reserve roll is held to the body of the roll;

Fig. 4 is a d agrammatic view of certain of the press units and folders, showing the driving motors for the folders and the means whereby the starting belt drive motor of the roll changing apparatus may be commutated to either of adjacent folder drive motors; and

' matic.

Fig. 5 is a wiring diagram of the electrical apparatus utilized in the invention.

Upon said drawings, I have shown a roll support in the form of a three-arm reel comprising fixed standards 6, each having a bearing 1 in the 5 upper end thereof for a reel shaft 8 at the opposite ends of which are supported three-arm spiders 9, each arm ii of which is provided with a bearing I? for a spindle or paper chuck 13 for rotatably supporting a paper roll. In Fig. 1 10 of the drawings, the active or running roll which is nearly exhausted is indicated by the reference numeral [4, and a reserve roll is indicated by the numeral [5, it being understood that new rolls may be loaded onto the arms shown at the right in Fig. 1, so that there may always be one or more reserve rolls on the reel. The reel is adapted to be rotated for the purpose'of positioning the rolls by means of a motor it, the armature shaft il of which is supported in bear- 20 ings.l8 and Q9 on the uprights 6 and carries a worm 2| meshing with a worm gear 2'2 carried by the reel shaft 8 at one end thereof as shown best in Fig. 2.

For the purpose of providing tension on the ac- 3 tive roll, a plurality of tension straps 23 are provided, being secured at their lower ends to a-rod .24 extending between the base portions of the uprights'G and at their upper ends being wrapped around cams or drums carried upon a shaft 39 26 which at one end has a sprocket 27 connected by a chainZil with a sprocket 29 on a shaft 3| of a torque motor 32, which, through said sprocket 29, chain 28 and sprocket 21, exerts a constant turning strain or torque upon the shaft 26, tend- 35 mg to wind up the straps 23 on the drums 25. It will be understood that the invention is not confined to this particular form of tension device and that the showing thereof is only diagram- It is well understood that some form of 40 tension device must be provided in all apparatus of this character for the plu'pose of controlling the rotation of the active roll and preferably providing for emergency stops in case of a paper break or a sudden stop or slowing down of the press.

The web 33 from the active roll H passes over guide rollers 34 and 35 and between the press cylinders indicated by the reference numeral 36, said cylinders being adapted to be driven through suitable gearing 31 from a drive motor 38 carried by support 39 secured to the press frame, one of said drive'motors preferably being provided for each of the press units.

The normal running position of the active roll it is above the position in which it is shown in Fig. l, and when this roll becomes nearly exhausted the reel may be turned by pressing an appropriate button at a push button station indicated by the numeral M in Fig. 1, thereby energizing the reel rotating motor 96.

Each arm ll of one of the spiders 9 carries at the end thereof a mirror 42, which, in the vertical position shown in Fig. l, reflects a beam from a light source 43 (which may be an ordinary electric light) into a photoelectric cell 44 which operates a relay shown in Fig. 5 of the drawings (to be presently described), thereby de-energizing the circuit of the motor 16 and stopping the rotation of the reel with the spare roll in the position shown in Fig. 1. Obviously the beam of light from the light source 43 will not be reflected into the photoelectric cell unless the mirror 62 on the reel arm H is in a. given position,:which position can of course be predetermined by the location of the light source and the photoelectric cell.

- This position is preferably such that the surface of the spare roll i 5 will be about one to two inches from the running web 33, although the exact position could of course be varied as might be desired. After reaching this position further depression of the positioning button will not cause any further rotation because the action of the light beam on the photoelectric cell Ml prevents the completion of the circuit of the motor I ii.

Upon release of the positioning button a belt drive motor 65 (which is electrically connected to a generator driven from the press in manner which will be later described) is energized and, through a belt 46 taking over a pulley ll on the motor shaft and a pulley $8 on a shaft 39 carrying a larger pulley 5 I, drives an endless belt 52 trained. over said pulley 5i and a pulley 53 on a shaft Ed,

said shafts 9 and 5d being journaled in bearing members 55 and 56, respectively, on a frame 5? which is pivotally supported at 5% from fixed frame members 59 depending from the press substructure fii. The downward movement of said belt frame 5! is limited by a hook $2 on the free end of said frame adapted to cooperate with a stud 63 on one of said fixed frame members 59.

The normal position of the belt 52 is thus in the path of the full rolls on the reel and when a roll is brought to the position of the roll H5 in Fig. 1 it engages said belt, as shown in this figure, the point of engagement of the roll being preferably near one end thereof, although the point of contact might be varied or additional belts provided, if desired.

When the motor 55 is energized, as previously stated, it drives the belt 52, which, in turn, rotates the roll, and since said motor 45 is operated by a press-driven generator the peripheral speed of the incoming roll will be promptly brought to the speed of the running web 33.

Referring now to Fig. 3, it will be noted that the leading edge of the new roll, which is preferably cut on an angle as shown in this figure, has glue applied thereto as indicated at 64, said edge being held to the roll by means of tabs 65, which are shown in detail in Fig. 3a, the forward ends of said tabs having adhesive on the underside thereof to cause the same to adhere to the roll and the rear ends of said tabs having adhesive on the upper side thereof to cause them to adhere to the web. Said tabs are preferably cut to provide diagonal slits 66 to facilitate the tearing thereof after the paster is made. It will be noted that space is left at the right of the glue, viewing Fig. 3, for the belt 52, and if it were desired to locate the belt elsewhere, or to provide a plurality of belts, the glue would obviously be applied ac cordingly.

Secured to the periphery of the roll and projecting beyond one end thereof is a timing tab 61, which may be of paper and which is adapted to intersect the path of the beam of light from the light source to the photoelectric cell 44 at a given point in the rotation of the roll. Said tab is preferably located immediately following the paste or glue so that nearly a full revolution of the roll will be permitted after said tab intercepts the light beam for a purpose which will presently appear.

After the roll i5 starts rotating, the tab 61 of course intercepts the light beam upon each rotation of the roll, thus momentarily energizing the relay in connection with the photoelectric cell M each time the beam is so intercepted, but this will have no effect unless the "paster button has been depressed by the operator. When thecore is run down to the point where the operator desires-to make a paster, he pushes this button which energizes a contact to produce rotation of the reel for the purpose of moving the new roll toward the web 33. However, the circuit through the paster button contacts, as will appear from the description of the wiring diagram of Fig. 5, is not complete until the timing tab intercepts the beam of light to the photoelectric cell 44. The first time a beam is intercepted by the tab after the paster button is depressed the circuit from the paster button contacts to the contactor for rotating the reelis closed and maintains its own holding circuit so that the new roll is moved toward the running web 33. As will later appear provision is made for operating the reel motor at this time as a sped considerably higher than the normal speed in order that the contact between the roll and the web may be very quickly made.

A paster brush 68 is provided on the opposite side of the web, being formed in sections, as shown in Fig. 2, and is supported from a shaft 69 by means of vertical bars H connected by a cross bar 12. .Said shaft 69 carries a sprocket 53 which is driven by a chain 14 taking over a sprocket E5 on the armature shaft 16 of a motor H which is adapted to be energized through the paster button contacts when the button is depressed and the light beam to the photoelectric cell id intercepted, as described in the preceding paragraph. This will cause the brush 68 to be moved inwardly simultaneously with the move ment of the roll 55 from the position shown in Fig. 1 toward the web, thus effecting contact of the new roll with the web in half the time which would be required through movement of the roll alone. Since the time element involved in bringing the web into contact with the roll is highly important, in view of the fact that this movement must be accomplished in a fraction of one revolution of the roll, this feature of the invention is of considerable practical importance. In view of the location of the tab 61 with reference to the glue, as hereinbefore mentioned, the roll will be permitted to make nearly a full revolution after the tab intercepts the light beam and before the glue comes into contact with the web.

and'the roll were at or near the point on the latter where the glue is located. The pull of the running web will readily sever the tabs after the paster is made, the tear starting with the slits 66, and the new web will continue intov the press without slackening of the speed of the latter.

Mechanism is provided for severing the web from the expiring roll after the pastor has been made, said means comprising a series of blades I0, which preferably have saw-toothed edges and which are carried by arms rigidly connected to a shaft 8| which is adapted to be turned by means of a small motor 82 mounted at the end thereof when said motor is energized in manner which will next be described.

A mirror 83 is mounted on an arm 84 secured to the frame substructure BI and is preferably located between the position of the rotating roll and the guide roller 34 over. which the web passes in traveling to the press. In combination with this mirror, a second photoelectric cell, identified by the reference character 05, is employed, being adapted to be operated by a beam of light from a light source 86, which beam is reflected into said cell by means of said mirror 83. After the poster has been made, the tab M which is attached to the web of the new roll is carried past the mirror at and intercepts the light beam to said photoelectric cell 85, thereby operating a relay (to he later described) which, in turn, energizes the motor or, which quickly turns the shaft till M, causing the saw-toothed blades 78 to sever the olel web, this being accomplished practically simultaneously with the interception of the light beam by the tab in passing between said mirror 83 and its associated photoelectric cell.

Referring to the schematic wiring diagram shown in 5, there are provided Your push huttons for controlling circuits the reel drive motor to, the belt drive motor the poster brush operating motor ll and the sheet cut-oil? motor 82, This series oi control liuttons comprises: a stop hirtton M; a hutton which is me chanicolly interconnected with stop button 38; a positioning hut-ton 9i; and a p aster button 93.

of these buttons are located on the push button station ll *(Flg. ll which is positioned at a convement point near the reel.

Assuming that the operator wishes to start turning of the reel carry a roll from loading position into the position occupied by roll it? preparatory to mailing a poster, he first depresses run button to which closes the contacts of stop button to supply current from a main line wire 83 through wires 9t, 9t; and SE to the contacts of positioning button 3i. Having thus preliminarily completed the circuit to the contacts of positioning button 96, the operator depresses the latter to supply current through a wire 91, a normally closed contactor 98, and a wire 29, to the coil lot or a slow speed starting'relay, the contacts oi the latter being indicated at i0? and lit. 'Ihe circuit from coil lfll is completed through a wire I04 to a wire lot, which connects with the other sidev of the main line supply. De-

' pression oi the positioning button ill thus energizes coll III! of the slow speed starting relay and closes ccntactors I02 and I03. The closing of the two last-mentioned contactors closes a circuit through the armature of reel drive motor I6. This armature circuit or motor I 6 is traced from wire 83 through wires I00, I01, and I00 to contactor I02, thence through a wire I09 and a wire IIO to the motor armature. The return from the motor armature is through a wire III and a wire II! to contactor I 03, thence through a wire Ill and a series field H5 to the other main line wire I05. The field circuit of motor I 6 is traced from main line wire 93 through wire I06, a normally closed contactor H6, and a wire II! to a field coil Ill and thence through a wire Hi! to the other side of the line. The contactor H6 in its normally closed position short circuits a shunt field resistance I2I. This shunt field resistance is short circuited by contactor II6 during all normal reel operations. As will presently appear, however, this resistance is inserted in the field of motor it to give the reel an increased speed of rotation during the making of the pastes.

With positioning button 9| depressed, the reel continues to rotate at slow speed until the fresh roll moves into engagement with the drive belt 52, at which point one of the mirrors 42 reflects a beam of light from the source 43 into photoelectric cell Mi. -when this occurs an amplifier which is associated with cell 44 energizes a relay coil I22 which moves contactor 98 to open circuit position, thereby tie-energizing coil llll and stopping operation of reel drive motor I5. So long as one of the mirrors t2 reflects light into cell 15, cell 922 remains energized and holds contactor 88 and coil tilt in open circuit position, thereby preventing further rotation of the reel even though posi ioning button Qt be held in depressed position.

i WEI roll has been moved against belt 52 the operator releases positioning button Q thereby closing a circuit through the upper contacts of the positioning button to a wire i223 which connects through a contactor I32 and a wire :25 with the coil are of a belt drive motor relay, the

contactcrs or which are indicated l2? and tilt.

@ontaotor lfl l will re in closed position at this time since it is operated by relay soil are which remains ene gized he photoelectric cell 44. when coil ltt s energized by raising of c ton ill, it closes contactors l2"! and 928 to complete the circuit between a press-driven alternating current generator lit and belt drive motor it, As will hereinafter appear, generator lie is driven from the folder drive motor and since the frequency of the generated current detennis-lee the speed of motor 85, it follows that the helt 52 is thus accurately driven at such speed as will. bring the spare roll up to the exact speed of the running weh.

Each time the roll turns, it carries tab Gl across the bears oi light which is directed onto mirror oz. The effect of this is to momentarily deenergize coil i222 to open contactor l'l Therefore, to avoid interruption of the circuit through coil 526, there is provided a holding circuit around contactor i2 5 which includes a wire l3i which connects through a wire I32 and a contactor in to a wire ltd, the latter connecting with wire H3 which supplies current to contactor i. As soon as current is supplied to wire I25 by the raising the positioning button through Wire I23, wire I34, contactor I33, and wire I 32 to a wire I35, which cormects through a contactor I36 and a wire I31 to the coil I38 of a high speed relay, the contactors of which are indicated at I35! and MI. Closing of the circuit through coil I38 moves contactors I39 and MI to closed circuit position. These contactors, it will be noted, are connected in parallel with contactors I02 and I63 of the slow speed starting relay, and when closed complete a circuit through the armature of motor I6 in the same manner as described in connection with contactors I02 and I03. However, the motor is operated at this time at high speed inasmuch as the contactor I I6 which short circuits fieldresistance I2I is moved to open circuit position by operation of the high speed starting relay. The

efiect of this is to insert shunt field resistance I2I in series with the field winding I I8 thereby giving the reel an increased speed of rotation during the inerval of the making of the paster.

At the same time that coil I38 is energized to close the high speed starting relay, brush operating motor I? is energized to start movement of brush 68 against the running web. The relay which controls the circuit of motor TI includes a coil I42 which is connected in circuit with wire I37, and a contactor I43 which in the closed position completes a circuit from main line wire 93' .and a wire M4 to the armature of motor II.

It will be noted that depression of the paster button will not close the circuits to' motors I6 and II unless contactor I36 is in closed circuit position. This contactor is mounted upon the .armature of relay coil I22 which is controlled by photoelectric cell 54. This coil, as previously explained, remains energized so long as light is re-' fiected from niirror 52 into cell it. With the spare roll in the position shown in Fig. 1, and rotating under the action of belt 52, this reflection of light to cell id is interrupted periodical 1y by tab 67, which, it will be recalled, is positioned slightly behind the strip of paste 64. Each time tab 67 cuts across the ray of light passing to cell 44, coil I22 is momentarily de-energizedand contactor I36 moves to closed circuit position. However, it remains in closed circuit position only for the instant during which the tab passes through the ray of light.

Regardless, therefore, of when the operator may depress the paster button, the circuit to motors I6 and II will not be closed until the tab 61 cuts.

through the'beam of light passing to cell 44, and the spare roll will continue to rotate through nearly one full revolution before the paste comes opposite the expiring web. There is thus provided ample time for movement of the spare roll toward he running web and also for movement of brush 68 against the web before the paste comes into contact with the web. A holding circuit is provided for coil I38 so that once the latter has been energized by momentary closing of contactors I 36, it will remain in such condition regard less of the position of said contactor. This holding circuit comprises a wire I45 which connects to coil I38 through a contactor I46. As soon as coil I38 is energized by the depression of the paster button and the closing of contactor I36, it pulls contactor I46 to closed circuit position, thereby maintaining a circuit through the paster button to coil I38 regardless of whether contactor I36 be open or closed.

Current to sheet cut-off motor 82 is supplied from wire I35 to a wire I41 which connects through a contactor I48 with the armature cirplained, to interrupt this beam of light to cell leased and the reel comes to rest with the active roll in normal running position.

The use of a press-driven alternating current generator for supplying current to the belt drive motors 35 is advantageous not only because it insures that the spare rolls will be brought to exactly the speed of the running web, but because it readily permits the motors to be associated with the particular folder which happens to be receiving the webs from a selected group of printing units. I"he electrical connections for accomplishing this are diagrammatically shown in Fig. 4. In this figure the several press units are indi cated generally-at I52, and a pair of adjacent folders are indicated at I53 and I5 5. The folders are provided with individual drive motors I55 and the alternating current generators I29, which supply belt drive motors 35, are driven from folder drive shafts I56 through bevel gears I57] and I58. The circuits of the several motors 45 are provided with two-way switches I59 whereby said motors may be connected with one or the other of a pair of bus bars IGI and I62, the connection with bar I6I being. efiected by throwing said switches to the right, and the connection with the bar I 62 being eifected by throwing said switches to the left. Current to bus bar I6I is supplied from the generator I29 which is associated with folder I53. Similarly current to bus bar I62 is supplied from the generator I29 which is associated with folder I 54. A simple adjustment of switches I59 thus serves to connect the motors 45 for operation in conjunction with either one or the other of the generators I29. Commutation to a greater number of generators than the two illustrated might be provided for, in manner which will be apparent to those skilled in the art, if desired.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

I claim:

support reaches a certain position for stopping said fresh roll a predetermined distance from said web, means for rotating said fresh roll to bring it to web-speed, and means for eifecting contact of the fresh roll and the traveling web from the expiring roll.

2. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for moving a fresh roll toward the traveling web from an expiring roll, means, including a light-sensitive device and a source of light cooperatively related thereto, for stopping said fresh roll a predetermined distance from said web, means for rotating said fresh roll to bring it to web-speed, and means for effecting contact of the fresh roll and the traveling web from the expiring roll, said last-mentioned means being controlled by interruption of the beam of light which operates said light-sensitive device.

3. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for moving a fresh roll toward the traveling web from an expiring roll, means including an automatic electric device controlled by the position of said roll supporting means but having no mechanical contact therewith or with the roll for stopping said fresh roll a predetermined distance from said web, means for rotating said fresh roll to bring it to web-speed, and means for effecting contact of the fresh roll and the traveling web from the expiring roll.

4. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for moving a fresh roll toward the traveling web from an expiring roll, means including a light-sensitive device and a source of light cooperatively related thereto, for stopping said fresh roll a predetermined distance from said web, means for rotating said fresh roll to bring it to web-speed, and means for effecting contact of the fresh roll and the traveling web from the expiring roll, said last-mentioned means being controlled by interruption of the beam of light which operates said light-sensitive device and including means for moving said web toward the fresh roll simultaneously with movement of said roll toward the web.

5. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for moving a fresh roll toward the traveling web from an expiring roll, means including a light-sensitive device and means carried by the roll support for causing operation of said device when said roll support reaches a certain position for stopping said fresh roll a predetermined distance from said web, means for rotating said fresh roll to bring it to web-speed, means for effecting contact of the fresh roll and the traveling web from the expiring roll causing the leading edge of the web on the fresh roll, having adhesive thereon, to be pasted to said traveling web, and means automatically operative after the paster between said webs has traveled a predetermined distance for cutting off said web. from the expiring roll.

6. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for moving a fresh roll toward the traveling web from an expiring roll, means for rotating said fresh roll to bring it to web-speed, means for effecting contact of the rotating fresh roll and the traveling web from the expiring roll causing the leading edge of the web on the fresh roll, having adhesive thereon, to be pasted to said traveling web, and means including a light-sensitive control device controlled by the travel of the web and automatically operative after the paster be tween said webs has traveled a predetermined distance for cutting off said web from the expiring roll.

7. In apparatus of the character described, means for making high speed pasters, comprising a movable support for a running roll and a spare roll, means for moving said support preparatory to making a roll change, means, including a light-sensitive device and a source of light cooperatively related thereto, for stopping the movement of the support with the spare roll spaced a predetermined distance from the web proceeding from the running roll to the press, means for starting rotation of the spare roll, said roll being provided with means adapted, when the roll is rotated, to interrupt the beam of light which operates said light-controlled means, and means operative upon the interruption of said light to further move said support to eifect contact of the spare roll with the traveling web from the expiring roll.

8. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for moving a fresh roll toward the traveling web from an expiring roll, and means other than the roll support for simultaneously moving the web toward the roll prior to contact of the roll with the web to thereby effect contact between said roll and web.

9. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for driving a fresh roll to rotate the same and bring it up to the speed of the traveling web from an expiring roll, means for effecting contact of the rotating fresh roll and the traveling web from the expiring roll, and means, including a light-sensitive controlling device controlled by the travel of the web, for cutting off said expiring web.

10. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means for driving a fresh roll having adhesive thereon to rotate the same and bring it up to the speed of the traveling web from an expiring roll, means for effecting contact of the rotating fresh roll and the traveling web from the expiring roll to make a pastor, and means, including a light-sensitive controlling device controlled by the travel of the web, for

cutting off said expiring web in timed relationship to the pasting operation.

11. In apparatus of the character described, the

combination of movable means for supporting a plurality of rolls of paper, means for effecting contact of a fresh roll having adhesive thereon with the web from an expiring roll to make a paster, and means including a light-sensitive device controlled by the travel of the web for cutting off said expiring web a predetermined distance behind the paster.

12. In apparatus of the character described, a magazine reel adapted to carry a plurality of rolls of paper, means for rotating said reel to bring a spare roll thereon into position adjacent thetravelingwebfrom an expiring roll, means for rotating the spare roll to bring it to web-speed,

the leading edge of the web of said spare roll having adhesive thereon, and means for effecting contact of the spare roll and the traveling web from the expiring roll, including light-controlled .means for timing the relative movement of the web and the spare roll with reference to the rotation of said roll to insure initial contact of the web with the roll at a-point on the latter well in advance of the adhesive.

13. In appara us of the character described, the combination of movable mans for supporting a plurality of rolls of paper, means for driving a fresh roll having adhesive thereon to rotate the same and bring it up to the speed of the traveling web from an expiring roll, means for effecting contact of the rotating fresh roll and the traveling web from the expiring roll to make a paster, and means, including a light-sensitive controlling device for cutting ofi said web, said means for eifecting contact of said roll and web comprising a light-sensitive device for normally preventing the final relative movement of said traveling web and spare re! and an element carried by said roll for interrupting, at a predetermined point in the rotation of said roll, a light beam which operates said light-sensitive device, thereby causing the latter to become inefiective to further prevent said final relative movement of said web and roll.

14. In apparatus of the character described,

the combination of movable means for supporting a plurality of rolls of paper, means for moving a spare roll into position adjacent the running web from an expiring roll, means for stopping the motion of said movable means with the spare roll a predetermined distance from the running web, the end of the web of said roll having adhesive thereon, means for rotating said spare roll,- and light-controlled means for efiecting contact between the spare roll and the running web, said means becoming efiective when said adhesive on d the web of the new roll is a substantial distance away from the point of contact with the running web, whereby time is allowed for effecting engagement between the roll and the running web be fore the adhesive on said roll arrives at the point of contact with said running web.

15. In apparatus of the character described, a magazine reel for carrying a plurality of rolk of paper, means for turning saidvreel to position a spare roll a predetermined distance from the traveling web from an expiring roll, means for rotating the spare roll to bring it up to web speed, and means for thereafter rotating the reel to effect contact between the rotating spare roll and said traveling web, said means including electrical devices automatically operable upon the starting of such rotation to accelerate the speed of said reel turning means.

16. In apparatus of the character described, the combination of movable means'for supporting a plurality of rolls of paper, means for effecting contact of a fresh roll having adhesive thereon with the web from an expiring roll to make a pastor, and means including a light-sensitive device controlled by the travel of the web for cutting off said expiring web behind the paster.

17. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, and means, including a light-sensitive device and a source of light cooperatively related thereto, for moving said supporting means to place a new roll in suitable relation to the web proceeding from an expiring roll to make a pastor, attaching the web of the new roll to the'expiring web, the web on said roll having a flag attached thereto for controlling the beam of light operating said device to thereby cause contact of the roll and web at a predetermined point in the rotation of said roll to efiect said-paster.

18. In apparatus of the character described, the combination of movable means for supporting a plurality of rolls of paper, means, including a light-sensitive device and a source of light cooperatively related thereto, for moving said supporting means to place a new roll in suitable relation to the web proceeding from an expiring roll to make a paster, attaching the web of the new roll to the expiring web, the web on said roll having a dag attached thereto for controlling the beam of light operating said device to thereby cause contact of the roll and web at a predetermined point in the rotation of said roll to effect said paster, and means, including a light-sensitive device, controlled by said flag at a predetermined point after it has left the roll to cut oh the expiring web.

HAROLD L. MCCLEERY. 

